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Convertible Senior Notes (Tables)

9 Months Ended

Sep. 30, 2022

Debt Disclosure [Abstract]

Summary of Notes Net of Discount and Deferred Financing Costs

The following table presents a summary of the 2024 Notes as of September 30, 2022.

			Principal Amount						Unamortized Debt												Net Carrying Amount						Fair Value
(in millions)									Discount						Issuance Costs												Amount						Leveling
2024 Notes			$	170.4					$	—					$	(1.2)					$	169.2					$	238.3					Level 2

The following table presents a summary of the 2024 Notes as of December 31, 2021.

			Principal Amount						Unamortized Debt												Net Carrying Amount						Fair Value
(in millions)									Discount						Issuance Costs												Amount						Leveling
2024 Notes			$	381.2					$	(43.2)					$	(2.9)					$	335.1					$	464.7					Level 2

The following table presents a summary of the interest expense of the 2024 Notes.

			Three Months Ended September 30,												Nine Months Ended September 30,
(in millions)			2022						2021						2022						2021
Coupon interest			$	1.0					$	2.2					$	5.0					$	6.3
Amortization of debt discount and issuance costs			0.2						4.4						1.0						12.9
Total			$	1.2					$	6.6					$	6.0					$	19.2

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Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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